Method and apparatus for reducing unwanted r.f. signal antenna reception/transmission
US4870424A · kind A · utility
30Cited by
11References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1982 |
| Grant date | Sep 26, 1989 |
| Priority date | — |
| Expiry date | Oct 25, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus is disclosed for selectively modulating r.f. signals received/transmitted via the radiation pattern side lobes of an r.f. antenna structure. Such modulation permits discrimination between desired r.f. signal energy received via the primary radiation pattern lobe and unwanted r.f. radiation (e.g. noise, jamming or other interference signals) received/transmitted via the secondary or side lobe(s) of the radiation pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.